AMD Phenom II 955 Black Edition processor problem

Restricted-XOct 30, 2009, 10:50 PM

Hi all.

i just got myself a AMD Phenom II 955 Black Edition processor. the problem is windows 7 Build 7100 only detects 2 of the processors cores. Task manager only has 2 performance graphs and its certain as Cpu Z only detects 2 cores aswell. how do i fix this? is it something to do with my bios version??i have a GA-MA770-UD3 motherboard that is bios version "FA"on the gigabyte support list it shows the AMD Phenom II 955 requires version "FF" or "FD"